20231023220 has 24 divisors (see below), whose sum is σ = 42549645600. Its totient is φ = 8080124192.

The previous prime is 20231023187. The next prime is 20231023249. The reversal of 20231023220 is 2232013202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754310 + ... + 780669.

It is an arithmetic number, because the mean of its divisors is an integer number (1772901900).

Almost surely, 2^20231023220 is an apocalyptic number.

20231023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20231023220 is an abundant number, since it is smaller than the sum of its proper divisors (22318622380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231023220 is a wasteful number, since it uses less digits than its factorization.

20231023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535647 (or 1535645 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20231023220 its reverse (2232013202), we get a palindrome (22463036422).

The spelling of 20231023220 in words is "twenty billion, two hundred thirty-one million, twenty-three thousand, two hundred twenty".